Magneto-machine.



L. A. WILLIAMS.

MAGNETO MACHINE.

APPLICATION FILED 110v. 17,1913,

Patented Nov. 17, 1914.

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LY NN A. WILLIAMS, 0F EVANSTON, ILLINOIS.

MAGNETO-MACHINE.

To all whom it may concern:

Be it known that I, LYNN A. WILLIAMS, a citizen of the United States,residing at Evanston, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Magneto-Machines, ofwhich the following is a full, clear, concise, and exact description,reference being had to the accompanying drawings, formin a part of thisspecification.

My invention relates to magneto machines, and particularly to that classof magneto machines employed in connection with ma ke-and-break ignitiondevices to produce the ignition sparks or arcs necessary for internalcombustion engine operation. The magneto is preferably of that typecomprising a solid metal rotor movable in one direction by anengine-driven actuating device, and returned quickly to normal positionby springs when released from said actuator to cause a rapid change inthe magnetic flux through the energizing windings of the magneto machineto cause the flow of the While the exact details of the magneto machineper 86 are not particularly important, in so far as the presentinvention is concerned, it is essential that the movable element thereofbe operable by an engine-driven actuator-and provided with meansforquickly returning it to normal position by spring action, as set forth.

One of the objects of the present invention is to provide a leverwhereby the movable element of the rotor of the magneto by one stroke ofthe lever may be manually moved from normal position, released and thenquickly returned to normal position by the current and so in .',chargewithin. the cylinder of the interna combustion engine with which themagneto is associated in order that the engine ma be started withoutcranking. The mahe-and-break ignition devices are, of

course, operated simultaneously with the operation ofthe magneto machineto permit the passing of the spark at the proper time. Themanually-operated lever just referred to is conformed and proportionedto secure the maximum mechanical advantage and is adapted to be used asa gage for adjusting the magneto and so that the same may be operated atthe necessary time during the enginecycle. These and other features ofmy invention are fully set forth 1n the fol- Specification of LettersPatent.

Application filed November 17, 1913.

be unnecessary be operated by Patented Nov. 17, 1914. Serial No.801,374.

lowing description and are illustrated in the accompanying drawings, inwhich Figure 1 is a front view of the mechanism of my invention; Fig. 2is a rear view there of, certain parts being illustrated in section;

Fig. '3 is a detail view illustrating the position of the hand-operatedstarting lever immediately before the rotor of the magneto machine isreleased therefrom, and Fig. 4 is a detail view showing thehand-operated starting lever used as a gage.

Similar reference numerals refer to similar parts throughout the severalviews.

Referring to the drawings, I have shown the framework of the magnetomachine at 5, send magneto being provided with the field magnets 6mounted in the framework 5. The said field magnets are provided withsuitable pole-pieces (not shown)? located in the framework 5, andmovable between said pole-pieces is a rotor (not shown), said rotorbeing rigidly attached to a shaft 7. The rotor referred to. ispreferably in the form of a solid metal inductor adapted when operatedto cause a rapid change in the magnetic flux passing through generatingwindings mounted upon the polepieces. These last-mentioned features ofmagneto machine construction are now well known to those skilled in theart, so it will for me to go into any elaborate description of the sameat this time.

Keyed or otherwise rigidly seonrpdupon the shaft 7 is a yoke 8, saidyoke being bent and pins 10 mounted in brackets supported by theframework of the machine are the ,1

helical springs 11 which normally retain the yoke 8 in the positionshown in Fig. l ofthe drawings. Mounted upon the pins 10 and theportions 9 of the yoke are suitable rollers 12 engagedby the ends of thehelical springs 11.

Rigi'dly mounted upon the rear end of the shaft 7 is an operating arm 13arranged to an engine-driven actuating rod 14. It Wlll rod 14 passesover a roller 15 and that therefore the position of the roller 15 willdetermine at what point in the engine cycle the arm 13 will be releasedfrom the enginedriven actuating 'rod 14.

:The magneto machine may, if desired, be

ulounted upon a bracket 16 arranged to be be seenthat the actuating wellknown to those skilled in the art. It

secured to the side of an engine cylinder. The present invention is notparticularly concerned with the details of the bracket 16,

so the same is merely shown partially in section and partially inelevation in F 2 of the drawings.

At 17 in Fig. 2 I have illustrated in section a shaft upon which inpractice is rigidly ,mounted the movable contact of -a make-and-breakignition device. I have not thought it necessary to illustrate the makeand-break contacts because these devices are will suffice to say thatturning the shaft 17 etfects the closing or separation of said contacts.is an arm 18, and acting between said arm and the bracket 16 is ahelical spring 19 which normally-tends to move the arm 18 and shaft 17in a clockwise direction (Fig. 2). Threaded into the lower end of thearm 18 is a screw 20 which normally abuts against an arm 21 formedintegral with the arm 13 mounted upon theshaft 7.

Mounted upon the right hand one of the pins 10 (Fig. 1) is amanually-operated lever 22 rounded to a point at 23. It will be seenthat the lever 22 is provided with. two apertures illustrated at24: and25, the pin 10 being disposed in the aperture 24: when the lever 22 isused as a starting lever and the said pin 10 being disposed in theaperture 25 when'the lever is utilized as a'gage.

Assuming the piston within the engine cylinder with which the magnetomachine just described is associated to be in proper position and thecylinder to contain a suitable combustible charge; the lever 22 is inthe position shown in full lines in Fig. l of the drawings and themakeand-break contacts within'the engine cylinder are closed. The longarm of the lever is then depressed,

moving the yoke 8 to the position shown in single thrust, as the portion9 of the yoke engaged by the lever will slip off the pointed end of thelever when the lever has reached a certain position. As, soon as theyoke is released from the lever, the helical springs 11 serve to quicklyreturn the yoke and rotor to normal position, thus causing a rapidchange in the magnetic flux through the energizing windings of themagneto machine and causing the flow of ignition .current.

Referring to Fig. 2 of the drawings, it will be seen that when the lever22 is operated to move the yoke to the position shown in Fig. 3, the arm21 rigidly mounted on the shaft 7 will be moved in a clockwisedirection' (Fig. 2), and out of engagement with the screw 20 carried bythe arm 18, the spring 19 tending to hold the movable contact mounted onthe shaft 17 in engagement with its associated stationary c ontact.

Rigidly mounted upon the shaft 17 When the yoke is released from thelever the springs 11 not only carry the yoke and parts fixed relativelythereto to normal position, but carry them past normal position,whereupon the arm 21 acts as a hammer to engage the screw 20 serving asan anvil to move the arm 18 in contra-clockwise direction (Fig. 2),against the tension of the spring 19 to separate the contacts within theengine cylinder and so cause the passing of a spark to ignite -thecombustible charge within the engine cylinder.

The engine, having started as a result of the explosion of the chargecaused by operating the lever 22, the magneto machine is now operated atthe proper-time in the en gine cycle by means of the engine-drivenactuating rod 14:, which once in every engine cycle moves the arm 13 andparts fixed relative thereto in a clockwise direction (Fig. 2), the saidarm 13 being released from said actuating rod at the proper time andreturned quickly to a normal position by the helical springs 11. Thesparking contacts are, of course, operated when the magneto machine isbeing driven from the engine in identically the same manner that theyare operated when the magneto is operated by the starting lever 22. Whenthe lever 22 is not in use it may be removed from position upon the pin10 which supports it, or it may be permitted to assume the positionillustrated in dotted lines in Fig.

The roller 15 which causes the enginedriven actuating rod 14 to bedisengaged from the arm 13 at'the proper time is mounted on a spindle 26fixed to a disk 27, and also fixed to said disk is a shaft or spindle 28mounted in a block 29 supported by the bracket 16. The shaft 26 isdisposed eccentric to the shaft 28 so that by adjusting the handle 80mounted upon the spindle 28, the time in the engine cycle at which thearm 13 is released from'the engine actuating rod 14 may be determined.Thus the passing of the spark in the engine cylinder may be advanced orretarded within certain limits. The handle 30 is provided with a flatspriigg 31 arranged to engage in suitable notches in a sector 32 formedintegral with theblock 29.

It will be seen that the block 29 is secured to the bracket 16 by meansof screws or bolts 33 passing through an elongated slot 34 in saidblock. The time in the engine cycle at which, the spark passes isprimarily determined by positioning the block 29 relative to the machineframework. The spark is advanced or retarded within certain limits bymanipulating the handle 30. W hen it is desirable to adjust the positionof the block 3 29 with respect to the other parts of the magnetomachine, the lever 22 is utilized as. a gage, the pin 10 at the righthand side of the machine (Fig.1) being disposed in the aperture 25 ofthe lever. The pointed end ed at 23 that when the said lever is used asa starting lever one stroke of said. lever is r of the lever is thendepressed to move the yoke 8 to the position shown in Fig. 4, and thisposition is the one at which it is desirable to release the rotor fromits actuating member during the operation of the magneto machine,regardless of whether said 0 erating lever is the lever 22 or theengineriven actuating rod 14. It will be seen that the yoke is securelylocked in the position shown in Fig. i when. the lever 22 is utilized asa gage, and the position of the block 29 may be readily adjusted inorder that the engine driven actuating rod 14: may be released from thearm 13 at exactly the proper time in the engine cycle.

It will be seen that the lever 22 is so roundsuliicient to operate andrelease the yoke and that the operation of the said yoke 1s accomplishedby means of a minimum amount of effort. 'The gage end of the leverserves as a handle when the'lever 22 is utilized for operating themagneto machine to roduce the starting spark. It will be un erstood thatthe lever 22 is utilized as a gage very (rarely and thatwhen'the leveris utilized as a gage and the yoke is locked in the position shown inFig. 4 it is necessary to withdraw the lever 22 from the pin 10 uponwhich it is mounted to release the yoke.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent ofthe United States is:

1. In combination, a magneto machine com prising a framework and arotor,"an enginedriven' actuator formoving the rotor in one directionandautomatically releasable from said rotor, springs for quickly moving therotor in the opposite direction when released a from said actuator, amanually operated lever adapted on one stroke thereof to move the rotorin the direc tionin which said rotor is moved by the engine-drivenactuator and to release the rotor, and a pin fixed relatively to saidrotor, said hand-operated lever comprisingan operating arm adapted toengage said pin, said-lever arm being rounded to a prising a frameworkand a rotor, an enginedriven actuator for moving the same in onedirection and automatically releasable from said rotor mechanism forquickly moving the rotor in the opposite direction when released fromsaid actuator, and a manuallyoperated lever adapted on one strokethereof to move the rotor in the direction in which it is moved by theengine'driven actuator and to release said rotor, said rotor comprisingan operating arm, and said lever comprising a portion adapted to engagesaid operating arm, the operating arm engaging portion of said leverbeing rounded to a point and said lever being pivoted to a stationarypart of the machine framework.

3. In combination, a magneto machine comprising a framework and a rotor,an engineclriven actuator .for moving the rotor in one direction andautomatically releasable from said rotor, a yoke fixed relatively tosaid rotor, springs attached to said yoke adapted to quickly move therotor td normal position when the rotor isreleased from said actuator,and a manually-operated lever adapted on one stroke thereof to move therotor in the direction in which it is moved by the engine-drivenactuator and to release the rotor, said lever comprising a portionadapted to engage said yoke, said portion being rounded to a point andsaid lever being ivoted to a stationary part of the mac line framework.I

In witness whereof, I hereuntojsubscribe my name this 12th day ofNovember, A. D.,

LEONARD E. Boson, AUGUST H. L. Armor.

Copies of this patent may be obtained for five cent: each, by addressingthe Commissioner of Patents,

Washington, D. 0.

